Place analysis
Visits per tile
TODO: fix bug that all legends appear in first map
Points outside the given tessellation: 3583
The following statistics give insights into the distribution of the visits over the tiles (mean, min, max and quartiles)
- whether there are tiles that are visited more often than others or if the visits are distributed equally over all tiles.
Distribution
| Min. |
0.0 |
| 25% |
0.0 |
| Median |
0.0 |
| 75% |
3.0 |
| Max. |
4854.0 |
A different way of visualizing the distribution of visits over tiles is achieved by the cumuluated sum of all visits: If only a few tiles include most of all visits, the curve has a steep increase in the beginning and a flat part at the end.
If the visits are distributed equally over the entire tiles the line is a straight diagonal.
Ranking most frequently visited tiles
| 1 |
385 (Id: 385): 4854.0 |
| 2 |
477 (Id: 477): 3052.0 |
| 3 |
265 (Id: 265): 1813.0 |
| 4 |
533 (Id: 533): 1780.0 |
| 5 |
165 (Id: 165): 1760.0 |
| 6 |
8 (Id: 8): 1638.0 |
| 7 |
364 (Id: 364): 1581.0 |
| 8 |
214 (Id: 214): 1032.0 |
| 9 |
678 (Id: 678): 914.0 |
| 10 |
360 (Id: 360): 710.0 |
Visits per tile and time window
Weekday: absolute count
Weekday: deviation from average
Weekend: absolute count
Weekend: deviation from average
Origin-destination (OD) analysis
OD flows between tiles
Intra-tile flows
The number and percentage of flows that start and end within the same tile.
4018.0 (24.24 %) of flows start and end within the same cell.
A large number of intra-cell flows either indicate round-trips
(e.g., going running starting and ending at the home location)
or a tessellation that is to coarse to properly capture flows.
Distribution
| Mean |
6.22 |
| Min. |
1.0 |
| 25% |
1.0 |
| Median |
1.0 |
| 75% |
2.0 |
| Max. |
593.0 |
A different way of visualizing the distribution of number per flows is achieved by the cumuluated sum of all flows:
If only a few flows include most of all visits, the curve has a steep increase in the beginning and a flat part at the end.
If the visits are distributed equally over the entire flows the line is a straight diagonal.
Most frequent OD connections
Ranking most frequent OD connections
| 1 |
385 - 385: 593.0 |
| 2 |
477 - 477: 392.0 |
| 3 |
364 - 364: 391.0 |
| 4 |
8 - 8: 366.0 |
| 5 |
477 - 477: 324.0 |
| 6 |
265 - 265: 319.0 |
| 7 |
533 - 533: 299.0 |
| 8 |
265 - 265: 292.0 |
| 9 |
214 - 214: 256.0 |
| 10 |
533 - 533: 252.0 |
Trip statistics
Travel time of trips (in minutes)
5166 outliers have been excluded.
Outliers are values above 90
Distribution
| Min. |
0.0 |
| 25% |
12.0 |
| Median |
22.0 |
| 75% |
40.0 |
| Max. |
90.0 |
Jump length (in kilometers)
45 outliers have been excluded.
Outliers are values above 30
Distribution
| Min. |
0.0 |
| 25% |
0.62 |
| Median |
2.23 |
| 75% |
8.05 |
| Max. |
29.95 |
User analysis
number of trajectories per user
Distribution
| Min. |
1.0 |
| 25% |
8.0 |
| Median |
27.5 |
| 75% |
89.75 |
| Max. |
2153.0 |
Time between two consecutive trajectories of a user
How much time passes between two consecutive trajeoctories?
This information gives insights on the temporal density of the dataset.
Trajectories might follow each other consecutively, then the time inbetween only is as long as the stay duration at that place.
If the trips are only collected sparsely there might be days between single trajectories of a user.
This analysis is based on the assumption that trips of a user follow each other consecutively and do not overlap,
i.e., the start time of a following trip cannot start before the previous one has ended.
Therefore, we first perform a plausibility check to ensure that no user trips overlap.
Otherwise this might be an indication for a faulty dataset.
Plausibility check: overlapping user trips
There are 0 cases where the start time of the following trajectory precedes the previous end time.
If there are overlapping trips present in the dataset the minimum time between trajectories will be negative.
Distribution
| Min. |
0 days 00:00:01 |
| 25% |
0 days 06:29:09.750000 |
| Median |
0 days 11:11:02 |
| 75% |
0 days 16:28:57.250000 |
| Max. |
2657 days 11:05:53 |
Radius of gyration (in kilometers)
The radius of gyration is the characteristic distance traveled by an individual during a period of time.
95 outliers have been excluded.
Outliers are values above 30
Distribution
| Min. |
0.09 |
| 25% |
2.0 |
| Median |
5.12 |
| 75% |
7.13 |
| Max. |
14.74 |
Location entropy
Location entropy (based on Shannon Entropy) captures the diversity of user visits.
If most trips to a certain location originate from a single (or few) user the entropy is low.
A high entropy suggests that the place is visited by diverse users evenly. A dataset with many cells with high visit counts but low entropy suggests, that single users drive certain mobility patterns that might not be representative for other users.
Number of distinct tiles per user
How many different tiles does a single user visit?
Distribution
| Min. |
0.0 |
| 25% |
4.0 |
| Median |
7.5 |
| 75% |
16.0 |
| Max. |
196.0 |
Mobility Entropy
The temporal-uncorrelated entropy characterizes the heterogeneity of the users visitation patterns (including the historical probability that a location was visited by the user).
Distribution
| Min. |
0.0 |
| 25% |
0.55 |
| Median |
0.68 |
| 75% |
0.81 |
| Max. |
1.0 |
